The Java 8 Stream API has introduced findFirst() method which returns an Optional holding the first element of the Stream.This tutorial will teach you possible ways to get the first …
Java 8 Optional class provides type-level Optional values instead of NULL references. Optional.orElse() and Optional.orElseGet() methods help to return alternate values if no value is present. You can always use …
Java 8 Optional class provides various methods to handle the null or empty value with ease. The Optional.of() and Optional.ofNullable() methods are used for converting an object/literal to an Optional …
Java 8 Optional class provides various methods to handle errors that are likely to be caused by any methods returning “null” references or “no result”. In this tutorial, you can …
JsonFormat is an Jackson interface helps to serialize values of a property.You can use @JsonFormat annotation to convert a String to LocalDate or vice versa.This tutorial explains how to use …
Break and Continue statements inside a loop in Java helps to have control over the loop iteration.This tutorial lets you see different possible ways to Break and Return from Java …
Java 8 Stream Foreach is a terminal operation and helps in iterating over each element of a stream. In Java 8, Foreach with index is not available by default while …
Sorting in JavaScript is a process of arranging objects in order sequentially or by grouping objects. In JavaScript, You can use arr.sort((a, b) => a.propertyName – b.propertyName ) syntax to …
Node.js supports ECMAScript modules to package reusable JavaScript codes. Modules are defined using multiple import and export statements. You can include type=”module” attribute in your script tag to solve Uncaught …
In JavaScript, when you work with Objects, it is obvious to perform a map function for objects by iterating through objects to manipulate data. JavaScript objects does not have a …